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BrunWord

615 bytes added, 10:38, 6 August 2011
/* ROM Cartridge and 8bit Status Port */
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===Technical===
 
ROM version has a size of 256K. It is split into 16K pages. 2 Pages are standard CPC roms, one of which is a "extension rom".
Part of the Brunword word processor is copied into RAM, the "extension rom" does most of this.
 
The ROM Select port (&DF00) is decoded and has 2 roles. First is to select which ROM page appears in the range &C000-&FFFF of the Z80's address space.
The second role (when bit 5,4 are used), makes a page visible in the range &4000-&FFFF of the Z80's address space.
 
The exact decoding of the ROM select port is unknown.
The exact function of all the data bits is not known.
== Manual ==
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